US11855483B2 - Uninterruptible power supply device - Google Patents

Uninterruptible power supply device Download PDF

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Publication number
US11855483B2
US11855483B2 US17/614,321 US201917614321A US11855483B2 US 11855483 B2 US11855483 B2 US 11855483B2 US 201917614321 A US201917614321 A US 201917614321A US 11855483 B2 US11855483 B2 US 11855483B2
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United States
Prior art keywords
power supply
power
system abnormality
supply part
abnormality
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US17/614,321
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English (en)
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US20220231536A1 (en
Inventor
Shoji Nishimura
Yoshinori Kawasaki
Satoshi Uda
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Nissin Electric Co Ltd
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Nissin Electric Co Ltd
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Assigned to NISSIN ELECTRIC CO., LTD. reassignment NISSIN ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWASAKI, YOSHINORI, NISHIMURA, SHOJI, UDA, SATOSHI
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. ac in dc installations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H02H3/253—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for multiphase applications, e.g. phase interruption
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/48—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to loss of synchronism
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Definitions

  • the disclosure relates to an uninterruptible power supply device of a continuous commercial power supply type.
  • An uninterruptible power supply device of the continuous commercial power supply type compensates for an instantaneous voltage drop or a frequency fluctuation of a system voltage of a commercial power system and is configured, for example, as disclosed in Patent Document 1, in a manner that a power supply part including a storage battery and a parallel inverter is connected to a load in parallel and a switch is provided at a level above them.
  • a power supply part including a storage battery and a parallel inverter is connected to a load in parallel and a switch is provided at a level above them.
  • the conventional uninterruptible power supply device of the continuous commercial power supply type performs only a compensation operation of an instantaneous voltage drop and a frequency fluctuation for the load, and may not perform a compensation operation for other system abnormalities. Further, the system abnormality is taken into consideration only for the load and is not taken into consideration for the energy storage device.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2005-229662
  • the disclosure has been made to solve the above problems, and its main objective is to provide an uninterruptible power supply device capable of responding to various system abnormalities other than a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • an uninterruptible power supply device is an uninterruptible power supply device provided between a commercial power system and an essential load and supplies AC power to the essential load.
  • the uninterruptible power supply device includes a power supply part, an open switch, a system abnormality detection part, and a control part.
  • the power supply part has an energy storage device connected to a power line for supplying power from the power system to the essential load.
  • the open switch is provided on a commercial power system side of the power supply part on the power line to open and close the power line.
  • the system abnormality detection part detects a system abnormality which is at least one of a voltage rise, a phase fluctuation, a voltage imbalance, a harmonic abnormality, and a flicker in addition to at least one of a voltage drop including an instantaneous voltage drop and a frequency fluctuation, occurring on the commercial power system side of the open switch.
  • the control part opens the open switch to supply AC power from the power supply part to the essential load when a detected system abnormality is equal to or greater than a tolerance of the essential load or the power supply part for the system abnormality.
  • the system abnormality detection part detects a system abnormality which is at least one of a voltage rise, a phase fluctuation, a voltage imbalance, a harmonic abnormality, and a flicker. Since the open switch is opened when the detected system abnormality is equal to or greater than the tolerance of the essential load or the power supply part for the system abnormality, it is possible to also respond to various system abnormalities other than a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • the uninterruptible power supply device of the continuous commercial power supply type can respond to system abnormality elements such as a voltage rise, a phase fluctuation, a voltage imbalance, a harmonic abnormality, and a flicker in addition to a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • system abnormality elements such as a voltage rise, a phase fluctuation, a voltage imbalance, a harmonic abnormality, and a flicker in addition to a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • the power supply part may perform autonomous operation within a range of a tolerance limit of one of the essential load and the power supply part that has a smaller tolerance for the system abnormality.
  • control part may cause the power supply part to perform a compensation operation for the system abnormality when the system abnormality detected by the system abnormality detection part is equal to or greater than a predetermined threshold value at which a degree of abnormality is less than the tolerance of the essential load or the power supply part for the system abnormality.
  • a power generation device connected to the power line may be provided separately from the power supply part.
  • an uninterruptible power supply device capable of responding to various system abnormalities other than a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • FIG. 1 is a schematic view showing a configuration of an uninterruptible power supply device according to a first embodiment.
  • FIG. 2 is a table showing a list of operation states in a system abnormality of the first embodiment.
  • FIG. 3 is a view showing a simulation model of a compensation operation at the time of a phase jump.
  • FIG. 4 is a diagram showing a simulation result when the open switch is not operated.
  • FIG. 8 is a schematic view showing a configuration of an uninterruptible power supply device of another modified embodiment.
  • the uninterruptible power supply device 100 includes a power supply part 2 , an open switch 3 which connects the commercial power system 10 , the power supply part 2 , and the essential load 30 , a system-side voltage detection part 4 which detects a voltage on the commercial power system 10 side of the open switch 3 , a system abnormality detection part 5 which detects a system abnormality from the detection voltage of the system-side voltage detection part 4 , and a control part 6 which opens the open switch 3 according to a detection signal of the system abnormality detection part 5 .
  • the frequency fluctuation detection part 52 detects a frequency fluctuation (frequency increase (OF), frequency decrease (UF)) from the detection voltage of the system-side voltage detection part 4 .
  • the frequency fluctuation is, for example, a stepwise rise or a ramp-like rise/fall.
  • the phase fluctuation detection part 54 detects a phase fluctuation such as a phase jump of 10° from the phase of the detection voltage of the system-side voltage detection part 4 .
  • the system abnormality detection part detects a system abnormality which is at least one of a voltage rise, a phase fluctuation, a voltage imbalance, a harmonic abnormality, and a flicker. Since the open switch 3 is opened when the detected system abnormality is equal to or greater than the tolerance of the essential load 30 or the power supply part 2 for the system abnormality, it is possible to also respond to various system abnormalities other than a voltage drop including an instantaneous voltage drop and a frequency fluctuation.
  • the control part 6 of the second embodiment causes the power supply part 2 to perform a compensation operation for each system abnormality without opening the open switch 3 .
  • the uninterruptible power supply device 100 closes the open switch 3 , and the power supply part 2 and the essential load 30 are connected to the commercial power system 10 via the open switch 3 .
  • the control part 6 maintains the state in which the open switch 3 is turned on. At this time, the power supply part 2 tracks the system abnormality of the commercial power system 10 and continues operating.
  • the control part 6 opens the open switch 3 .
  • the power supply part 2 continues operating within the range of the tolerance limit of one of the essential load 30 and the power supply part 2 that has the smaller system abnormality tolerance (autonomous operation).
  • the uninterruptible power supply device 100 of the second embodiment configured in this manner, in addition to the effect of the first embodiment, it is possible to reduce the frequency of transition to autonomous operation with high running cost.
  • a power generation device (generator) 7 connected to the power line L 1 may be provided separately from the power supply part 2 .
  • the power generation device 7 is connected to the essential load 30 side of the open switch 3 .
  • the open switch 3 is opened when any one of the system abnormalities satisfies the condition.
  • the open switch 3 may also be opened when a combination of two or more system abnormalities satisfies the predetermined condition.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Stand-By Power Supply Arrangements (AREA)
US17/614,321 2019-07-01 2019-07-01 Uninterruptible power supply device Active 2040-01-25 US11855483B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/026044 WO2021001872A1 (ja) 2019-07-01 2019-07-01 無停電電源装置

Publications (2)

Publication Number Publication Date
US20220231536A1 US20220231536A1 (en) 2022-07-21
US11855483B2 true US11855483B2 (en) 2023-12-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
US17/614,321 Active 2040-01-25 US11855483B2 (en) 2019-07-01 2019-07-01 Uninterruptible power supply device

Country Status (6)

Country Link
US (1) US11855483B2 (zh)
EP (1) EP3996241A4 (zh)
JP (1) JP7401793B2 (zh)
CN (1) CN113906647B (zh)
AU (1) AU2019453332B2 (zh)
WO (1) WO2021001872A1 (zh)

Citations (13)

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Publication number Priority date Publication date Assignee Title
JP2003219578A (ja) 2002-01-17 2003-07-31 Ntt Power & Building Facilities Inc 無停電電源システム
US20040084965A1 (en) 2002-10-22 2004-05-06 Welches Richard Shaun Hybrid variable speed generator/uninterruptible power supply power converter
JP2005229662A (ja) 2004-02-10 2005-08-25 Fuji Electric Systems Co Ltd 無停電電源装置
TW200841555A (en) 2007-04-13 2008-10-16 Delta Electronics Inc Uninterruptible power supply and method for controlling same
JP2009177961A (ja) 2008-01-25 2009-08-06 Mitsubishi Electric Corp 無停電電源装置
JP2009254102A (ja) 2008-04-04 2009-10-29 Mitsubishi Electric Corp 無停電電源装置
JP2013009584A (ja) 2011-05-26 2013-01-10 Panasonic Corp 蓄電装置
CN105429280A (zh) 2014-08-15 2016-03-23 光宝电子(广州)有限公司 不断电系统及其供应方法
TW201614929A (en) 2014-10-08 2016-04-16 Acbel Polytech Inc Alternate battery backup module and battery backup system
JP2017032452A (ja) 2015-08-04 2017-02-09 住友電気工業株式会社 入力電圧の異常検出方法及び電源装置
CN106300646B (zh) 2016-10-14 2017-06-16 湖南大学 一种海岛供电互动式ups系统抗扰动抑制方法
WO2019007691A1 (de) 2017-07-04 2019-01-10 Siemens Aktiengesellschaft Unterbrechungsfreie stromversorgung
JP2019047656A (ja) 2017-09-04 2019-03-22 日新電機株式会社 電源システム

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JP3598799B2 (ja) * 1998-02-25 2004-12-08 新神戸電機株式会社 無停電電源装置
JP2000184622A (ja) * 1998-12-09 2000-06-30 Hitachi Ltd 無停電電源装置
JP2000278882A (ja) 1999-03-24 2000-10-06 Sanyo Denki Co Ltd 無停電電源装置
JP2006509489A (ja) 2002-12-06 2006-03-16 エレクトリック　パワー　リサーチ　インスチテュート　インコーポレイテッド 無停電源及び発電システム
WO2005041384A1 (ja) 2003-10-27 2005-05-06 Mitsubishi Denki Kabushiki Kaisha 電源装置
US7262520B2 (en) 2003-12-18 2007-08-28 General Electric Company Robust power distribution systems and methods
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JP7180112B2 (ja) 2018-05-15 2022-11-30 日新電機株式会社 無停電電源装置
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003219578A (ja) 2002-01-17 2003-07-31 Ntt Power & Building Facilities Inc 無停電電源システム
US20040084965A1 (en) 2002-10-22 2004-05-06 Welches Richard Shaun Hybrid variable speed generator/uninterruptible power supply power converter
JP2005229662A (ja) 2004-02-10 2005-08-25 Fuji Electric Systems Co Ltd 無停電電源装置
TW200841555A (en) 2007-04-13 2008-10-16 Delta Electronics Inc Uninterruptible power supply and method for controlling same
JP2009177961A (ja) 2008-01-25 2009-08-06 Mitsubishi Electric Corp 無停電電源装置
JP2009254102A (ja) 2008-04-04 2009-10-29 Mitsubishi Electric Corp 無停電電源装置
JP2013009584A (ja) 2011-05-26 2013-01-10 Panasonic Corp 蓄電装置
CN105429280A (zh) 2014-08-15 2016-03-23 光宝电子(广州)有限公司 不断电系统及其供应方法
TW201614929A (en) 2014-10-08 2016-04-16 Acbel Polytech Inc Alternate battery backup module and battery backup system
JP2017032452A (ja) 2015-08-04 2017-02-09 住友電気工業株式会社 入力電圧の異常検出方法及び電源装置
CN106300646B (zh) 2016-10-14 2017-06-16 湖南大学 一种海岛供电互动式ups系统抗扰动抑制方法
WO2019007691A1 (de) 2017-07-04 2019-01-10 Siemens Aktiengesellschaft Unterbrechungsfreie stromversorgung
JP2019047656A (ja) 2017-09-04 2019-03-22 日新電機株式会社 電源システム

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"Office Action of India Counterpart Application", dated Jul. 15, 2022, p. 1-p. 5.
"Search Report of Europe Counterpart Application", dated Jan. 9, 2023, p. 1-p. 7.
Office Action of Taiwan Counterpart Application, with English translation thereof, dated Jan. 7, 2020, pp. 1-11.
Office Action of Taiwan Counterpart Application, with English translation thereof, dated Sep. 3, 2020, pp. 1-8.

Also Published As

Publication number Publication date
JP7401793B2 (ja) 2023-12-20
JPWO2021001872A1 (zh) 2021-01-07
US20220231536A1 (en) 2022-07-21
CN113906647A (zh) 2022-01-07
EP3996241A1 (en) 2022-05-11
EP3996241A4 (en) 2023-02-08
AU2019453332A1 (en) 2021-12-23
AU2019453332B2 (en) 2022-10-13
CN113906647B (zh) 2024-07-02
WO2021001872A1 (ja) 2021-01-07

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